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m68k: Remove big kernel lock in cache flush code

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The cache flush code doesn't need a lock, so we can remove the use of the BKL.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reported-by: Arnd Bergmann <arnd@arndb.de>
Suggested-by: Andreas Schwab <schwab@linux-m68k.org>
This commit is contained in:
Geert Uytterhoeven 2010-09-14 21:34:58 +02:00
parent 22e58f9de5
commit 2f81a18446
1 changed files with 0 additions and 3 deletions
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3
arch/m68k/kernel/sys_m68k.c
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@ -12,7 +12,6 @@
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/sem.h>
#include <linux/msg.h>
#include <linux/shm.h>
@ -377,7 +376,6 @@ sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len)
struct vm_area_struct *vma;
int ret = -EINVAL;
lock_kernel();
if (scope < FLUSH_SCOPE_LINE || scope > FLUSH_SCOPE_ALL ||
cache & ~FLUSH_CACHE_BOTH)
goto out;
@ -446,7 +444,6 @@ sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len)
}
}
out:
unlock_kernel();
return ret;
}